Calculation of Fatigue Life of Bow Frame of ARAON Considering Navigating in Ice and Open Waters

Ice-going ships such as icebreakers, icebreaking tankers, and icebreaking LNG carriers are subjected to wave loads in open water and ice loads in ice-covered water. In terms of the ship’s structural design, the local ice load is important. The fatigue failure due to repeated ice loads is also import...

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Bibliographic Details
Published in:Journal of Ocean Engineering and Technology
Main Authors: Woo-Seong An, Tak-Kee Lee, Mi-Ran Hwang
Format: Article in Journal/Newspaper
Language:English
Published: The Korean Society of Ocean Engineers 2018
Subjects:
Ice-going ship
Fatigue life
Ice load
Wave load
Fatigue damage index
Ocean engineering
TC1501-1800
Arctic
Antarctic
Antarc*
Online Access:https://doi.org/10.26748/KSOE.2018.32.6.458
https://doaj.org/article/4509f507713d4a9491bd3a7e6de4b7f8
Description
Summary:Ice-going ships such as icebreakers, icebreaking tankers, and icebreaking LNG carriers are subjected to wave loads in open water and ice loads in ice-covered water. In terms of the ship’s structural design, the local ice load is important. The fatigue failure due to repeated ice loads is also important. ISO 19906 specifies the assessment of the fatigue limit for a polar offshore structures. In addition, Lloyd’s Register refers to fatigue damage based on ShipRight FDA ICE. In ShipRight FDA ICE, the fatigue damage indices due to wave and ice loads are simply presented as 0.5 for each load. It also states that the sum of the two fatigue damage indices should not exceed one. This study calculated and analyzed the fatigue damage index and fatigue life considering ARAON's voyage schedules and the assumed Antarctic voyage based on data measured during the Arctic voyage of ARAON in 2010.

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